Append one or more values to the array values at the path.
Syntax
JSON.ARRAPPEND <key> <path> <json> [json ...]
key (required) – key of JSON document type
path (required) – a JSON path
json (required) – JSON value to be appended to the array
Return
If the path is enhanced syntax:
Array of integers, representing the new length of the array at each path.
-
If a value is not an array, its corresponding return value is null.
-
SYNTAXERRerror if one of the input json arguments is not a valid JSON string. -
NONEXISTENTerror if the path does not exist.
If the path is restricted syntax:
Integer, the array's new length.
If multiple array values are selected, the command returns the new length of the last updated array.
-
WRONGTYPEerror if the value at the path is not an array. -
SYNTAXERRerror if one of the input json arguments is not a valid JSON string. -
NONEXISTENTerror if the path does not exist.
Examples
Enhanced path syntax:
127.0.0.1:6379> JSON.SET k1 . '[[], ["a"], ["a", "b"]]'
OK
127.0.0.1:6379> JSON.ARRAPPEND k1 $[*] '"c"'
1) (integer) 1
2) (integer) 2
3) (integer) 3
127.0.0.1:6379> JSON.GET k1
"[[\"c\"],[\"a\",\"c\"],[\"a\",\"b\",\"c\"]]"
Restricted path syntax:
127.0.0.1:6379> JSON.SET k1 . '[[], ["a"], ["a", "b"]]'
OK
127.0.0.1:6379> JSON.ARRAPPEND k1 [-1] '"c"'
(integer) 3
127.0.0.1:6379> JSON.GET k1
"[[],[\"a\"],[\"a\",\"b\",\"c\"]]"
